TopoJSON State Selection

Sometimes you do not want to display the US and all its counties. Sometimes you just want one or some states. This page will allow you to select the state(s) you want to display the counties and generate a TopoJSON file representing the selection.

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

District of Columbia

Florida

Geogia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Guide

Data for processing is preloaded from a local copy of Mike Bostocks map. Feel free to clear and load your own. NOTE: It should be formatted as Mike's below. In other words, just use Mike's JSON map.

"Load Data" will clear and reload the local copy of the data.

ctrl + shift + i to open console for information during processing in Chrome

Every time "Process Data" is clicked the "Completed JSON" file is rebuilt with the states selection above in the &quote;Completed JSON" window below.

Clicking "Process Data" without any checkboes selected will produce an empty map.

Select all the content from the "Completed JSON" window and paste in notepad, or click "Copy to clipboard" to select all and copy, then open notepad and paste.

Data

FIPS codes for States A - C are 01 - 09 leading FIPS and only have 4 digits since they are cataloged with the leading 0 having been omitted, so for instance 01 Alabama will have FIPS codes 1### as opposed to 01###. However they are represented as 01 when we do the county count in the Developers Tool Console for digit count consistency of a two digit representation.